/* Timing variables for measuring compiler performance.
- Copyright (C) 2000 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2003, 2004, 2005, 2007, 2010
+ Free Software Foundation, Inc.
Contributed by Alex Samuel <samuel@codesourcery.com>
This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
-#include "intl.h"
-#include "rtl.h"
-
-#ifdef HAVE_SYS_TIMES_H
-# include <sys/times.h>
-#endif
-#ifdef HAVE_SYS_RESOURCE_H
-#include <sys/resource.h>
-#endif
+#include "timevar.h"
#ifndef HAVE_CLOCK_T
typedef int clock_t;
};
#endif
-#if defined HAVE_DECL_GETRUSAGE && !HAVE_DECL_GETRUSAGE
-extern int getrusage PARAMS ((int, struct rusage *));
-#endif
-#if defined HAVE_DECL_TIMES && !HAVE_DECL_TIMES
-extern clock_t times PARAMS ((struct tms *));
-#endif
-#if defined HAVE_DECL_CLOCK && !HAVE_DECL_CLOCK
-extern clock_t clock PARAMS ((void));
-#endif
-
#ifndef RUSAGE_SELF
# define RUSAGE_SELF 0
#endif
/* Prefer times to getrusage to clock (each gives successively less
information). */
#ifdef HAVE_TIMES
+# if defined HAVE_DECL_TIMES && !HAVE_DECL_TIMES
+ extern clock_t times (struct tms *);
+# endif
# define USE_TIMES
# define HAVE_USER_TIME
# define HAVE_SYS_TIME
# define HAVE_WALL_TIME
#else
#ifdef HAVE_GETRUSAGE
+# if defined HAVE_DECL_GETRUSAGE && !HAVE_DECL_GETRUSAGE
+ extern int getrusage (int, struct rusage *);
+# endif
# define USE_GETRUSAGE
# define HAVE_USER_TIME
# define HAVE_SYS_TIME
#else
#ifdef HAVE_CLOCK
+# if defined HAVE_DECL_CLOCK && !HAVE_DECL_CLOCK
+ extern clock_t clock (void);
+# endif
# define USE_CLOCK
# define HAVE_USER_TIME
#endif
precompute them. Whose wonderful idea was it to make all those
_constants_ variable at run time, anyway? */
#ifdef USE_TIMES
-static float ticks_to_msec;
-#define TICKS_TO_MSEC (1 / (float)TICKS_PER_SECOND)
+static double ticks_to_msec;
+#define TICKS_TO_MSEC (1 / (double)TICKS_PER_SECOND)
#endif
#ifdef USE_CLOCK
-static float clocks_to_msec;
-#define CLOCKS_TO_MSEC (1 / (float)CLOCKS_PER_SEC)
+static double clocks_to_msec;
+#define CLOCKS_TO_MSEC (1 / (double)CLOCKS_PER_SEC)
#endif
-#include "flags.h"
-#include "timevar.h"
+/* True if timevars should be used. In GCC, this happens with
+ the -ftime-report flag. */
-/* See timevar.h for an explanation of timing variables. */
+bool timevar_enable;
+
+/* Total amount of memory allocated by garbage collector. */
+
+size_t timevar_ggc_mem_total;
+
+/* The amount of memory that will cause us to report the timevar even
+ if the time spent is not significant. */
-/* This macro evaluates to nonzero if timing variables are enabled. */
-#define TIMEVAR_ENABLE (time_report)
+#define GGC_MEM_BOUND (1 << 20)
+
+/* See timevar.h for an explanation of timing variables. */
/* A timing variable. */
/* The name of this timing variable. */
const char *name;
- /* Non-zero if this timing variable is running as a standalone
+ /* Nonzero if this timing variable is running as a standalone
timer. */
unsigned standalone : 1;
- /* Non-zero if this timing variable was ever started or pushed onto
+ /* Nonzero if this timing variable was ever started or pushed onto
the timing stack. */
unsigned used : 1;
};
element. */
static struct timevar_time_def start_time;
-static void get_time
- PARAMS ((struct timevar_time_def *));
-static void timevar_accumulate
- PARAMS ((struct timevar_time_def *, struct timevar_time_def *,
- struct timevar_time_def *));
+static void get_time (struct timevar_time_def *);
+static void timevar_accumulate (struct timevar_time_def *,
+ struct timevar_time_def *,
+ struct timevar_time_def *);
/* Fill the current times into TIME. The definition of this function
also defines any or all of the HAVE_USER_TIME, HAVE_SYS_TIME, and
- HAVA_WALL_TIME macros. */
+ HAVE_WALL_TIME macros. */
static void
-get_time (now)
- struct timevar_time_def *now;
+get_time (struct timevar_time_def *now)
{
now->user = 0;
now->sys = 0;
now->wall = 0;
+ now->ggc_mem = timevar_ggc_mem_total;
- if (!TIMEVAR_ENABLE)
+ if (!timevar_enable)
return;
{
/* Add the difference between STOP_TIME and START_TIME to TIMER. */
static void
-timevar_accumulate (timer, start_time, stop_time)
- struct timevar_time_def *timer;
- struct timevar_time_def *start_time;
- struct timevar_time_def *stop_time;
+timevar_accumulate (struct timevar_time_def *timer,
+ struct timevar_time_def *start_time,
+ struct timevar_time_def *stop_time)
{
timer->user += stop_time->user - start_time->user;
timer->sys += stop_time->sys - start_time->sys;
timer->wall += stop_time->wall - start_time->wall;
+ timer->ggc_mem += stop_time->ggc_mem - start_time->ggc_mem;
}
/* Initialize timing variables. */
void
-init_timevar ()
+timevar_init (void)
{
- if (!TIMEVAR_ENABLE)
- return;
+ timevar_enable = true;
/* Zero all elapsed times. */
- memset ((void *) timevars, 0, sizeof (timevars));
+ memset (timevars, 0, sizeof (timevars));
/* Initialize the names of timing variables. */
#define DEFTIMEVAR(identifier__, name__) \
TIMEVAR cannot be running as a standalone timer. */
void
-timevar_push (timevar)
- timevar_id_t timevar;
+timevar_push_1 (timevar_id_t timevar)
{
struct timevar_def *tv = &timevars[timevar];
struct timevar_stack_def *context;
struct timevar_time_def now;
- if (!TIMEVAR_ENABLE)
- return;
-
/* Mark this timing variable as used. */
tv->used = 1;
/* Can't push a standalone timer. */
- if (tv->standalone)
- abort ();
+ gcc_assert (!tv->standalone);
/* What time is it? */
get_time (&now);
unused_stack_instances = unused_stack_instances->next;
}
else
- context = (struct timevar_stack_def *)
- xmalloc (sizeof (struct timevar_stack_def));
+ context = XNEW (struct timevar_stack_def);
/* Fill it in and put it on the stack. */
context->timevar = tv;
timing variable. */
void
-timevar_pop (timevar)
- timevar_id_t timevar;
+timevar_pop_1 (timevar_id_t timevar)
{
struct timevar_time_def now;
struct timevar_stack_def *popped = stack;
- if (!TIMEVAR_ENABLE)
- return;
-
- if (&timevars[timevar] != stack->timevar)
- abort ();
+ gcc_assert (&timevars[timevar] == stack->timevar);
/* What time is it? */
get_time (&now);
attributed to TIMEVAR. */
void
-timevar_start (timevar)
- timevar_id_t timevar;
+timevar_start (timevar_id_t timevar)
{
struct timevar_def *tv = &timevars[timevar];
- if (!TIMEVAR_ENABLE)
+ if (!timevar_enable)
return;
/* Mark this timing variable as used. */
/* Don't allow the same timing variable to be started more than
once. */
- if (tv->standalone)
- abort ();
+ gcc_assert (!tv->standalone);
tv->standalone = 1;
get_time (&tv->start_time);
is attributed to it. */
void
-timevar_stop (timevar)
- timevar_id_t timevar;
+timevar_stop (timevar_id_t timevar)
{
struct timevar_def *tv = &timevars[timevar];
struct timevar_time_def now;
- if (!TIMEVAR_ENABLE)
+ if (!timevar_enable)
return;
/* TIMEVAR must have been started via timevar_start. */
- if (!tv->standalone)
- abort ();
+ gcc_assert (tv->standalone);
+ tv->standalone = 0; /* Enable a restart. */
get_time (&now);
timevar_accumulate (&tv->elapsed, &tv->start_time, &now);
}
-/* Fill the elapsed time for TIMEVAR into ELAPSED. Returns
- update-to-date information even if TIMEVAR is currently running. */
-void
-timevar_get (timevar, elapsed)
- timevar_id_t timevar;
- struct timevar_time_def *elapsed;
+/* Conditionally start timing TIMEVAR independently of the timing stack.
+ If the timer is already running, leave it running and return true.
+ Otherwise, start the timer and return false.
+ Elapsed time until the corresponding timevar_cond_stop
+ is called for the same timing variable is attributed to TIMEVAR. */
+
+bool
+timevar_cond_start (timevar_id_t timevar)
{
struct timevar_def *tv = &timevars[timevar];
- struct timevar_time_def now;
- *elapsed = tv->elapsed;
+ if (!timevar_enable)
+ return false;
+
+ /* Mark this timing variable as used. */
+ tv->used = 1;
- /* Is TIMEVAR currently running as a standalone timer? */
if (tv->standalone)
- {
- get_time (&now);
- timevar_accumulate (elapsed, &tv->start_time, &now);
- }
- /* Or is TIMEVAR at the top of the timer stack? */
- else if (stack->timevar == tv)
- {
- get_time (&now);
- timevar_accumulate (elapsed, &start_time, &now);
- }
+ return true; /* The timevar is already running. */
+
+ /* Don't allow the same timing variable
+ to be unconditionally started more than once. */
+ tv->standalone = 1;
+
+ get_time (&tv->start_time);
+ return false; /* The timevar was not already running. */
+}
+
+/* Conditionally stop timing TIMEVAR. The RUNNING parameter must come
+ from the return value of a dynamically matching timevar_cond_start.
+ If the timer had already been RUNNING, do nothing. Otherwise, time
+ elapsed since timevar_cond_start was called is attributed to it. */
+
+void
+timevar_cond_stop (timevar_id_t timevar, bool running)
+{
+ struct timevar_def *tv;
+ struct timevar_time_def now;
+
+ if (!timevar_enable || running)
+ return;
+
+ tv = &timevars[timevar];
+
+ /* TIMEVAR must have been started via timevar_cond_start. */
+ gcc_assert (tv->standalone);
+ tv->standalone = 0; /* Enable a restart. */
+
+ get_time (&now);
+ timevar_accumulate (&tv->elapsed, &tv->start_time, &now);
}
+
/* Summarize timing variables to FP. The timing variable TV_TOTAL has
a special meaning -- it's considered to be the total elapsed time,
for normalizing the others, and is displayed last. */
void
-timevar_print (fp)
- FILE *fp;
+timevar_print (FILE *fp)
{
/* Only print stuff if we have some sort of time information. */
#if defined (HAVE_USER_TIME) || defined (HAVE_SYS_TIME) || defined (HAVE_WALL_TIME)
struct timevar_time_def *total = &timevars[TV_TOTAL].elapsed;
struct timevar_time_def now;
- if (!TIMEVAR_ENABLE)
+ if (!timevar_enable)
return;
/* Update timing information in case we're calling this from GDB. */
TIMEVAR. */
start_time = now;
- fputs (_("\nExecution times (seconds)\n"), fp);
+ fputs ("\nExecution times (seconds)\n", fp);
for (id = 0; id < (unsigned int) TIMEVAR_LAST; ++id)
{
struct timevar_def *tv = &timevars[(timevar_id_t) id];
- const float tiny = 5e-3;
+ const double tiny = 5e-3;
/* Don't print the total execution time here; that goes at the
end. */
zeroes. */
if (tv->elapsed.user < tiny
&& tv->elapsed.sys < tiny
- && tv->elapsed.wall < tiny)
+ && tv->elapsed.wall < tiny
+ && tv->elapsed.ggc_mem < GGC_MEM_BOUND)
continue;
/* The timing variable name. */
- fprintf (fp, " %-22s:", tv->name);
+ fprintf (fp, " %-24s:", tv->name);
#ifdef HAVE_USER_TIME
/* Print user-mode time for this process. */
(total->wall == 0 ? 0 : tv->elapsed.wall / total->wall) * 100);
#endif /* HAVE_WALL_TIME */
+ /* Print the amount of ggc memory allocated. */
+ fprintf (fp, "%8u kB (%2.0f%%) ggc",
+ (unsigned) (tv->elapsed.ggc_mem >> 10),
+ (total->ggc_mem == 0
+ ? 0
+ : (float) tv->elapsed.ggc_mem / total->ggc_mem) * 100);
+
putc ('\n', fp);
}
/* Print total time. */
- fputs (_(" TOTAL :"), fp);
+ fputs (" TOTAL :", fp);
#ifdef HAVE_USER_TIME
fprintf (fp, "%7.2f ", total->user);
#endif
fprintf (fp, "%7.2f ", total->sys);
#endif
#ifdef HAVE_WALL_TIME
- fprintf (fp, "%7.2f\n", total->wall);
+ fprintf (fp, "%7.2f ", total->wall);
+#endif
+ fprintf (fp, "%8u kB\n", (unsigned) (total->ggc_mem >> 10));
+
+#ifdef ENABLE_CHECKING
+ fprintf (fp, "Extra diagnostic checks enabled; compiler may run slowly.\n");
+ fprintf (fp, "Configure with --enable-checking=release to disable checks.\n");
+#endif
+#ifndef ENABLE_ASSERT_CHECKING
+ fprintf (fp, "Internal checks disabled; compiler is not suited for release.\n");
+ fprintf (fp, "Configure with --enable-checking=release to enable checks.\n");
#endif
#endif /* defined (HAVE_USER_TIME) || defined (HAVE_SYS_TIME)
|| defined (HAVE_WALL_TIME) */
}
-/* Returns time (user + system) used so far by the compiler process,
- in microseconds. */
-
-long
-get_run_time ()
-{
- struct timevar_time_def total_elapsed;
- timevar_get (TV_TOTAL, &total_elapsed);
- return total_elapsed.user + total_elapsed.sys;
-}
-
/* Prints a message to stderr stating that time elapsed in STR is
TOTAL (given in microseconds). */
void
-print_time (str, total)
- const char *str;
- long total;
+print_time (const char *str, long total)
{
long all_time = get_run_time ();
fprintf (stderr,
- _("time in %s: %ld.%06ld (%ld%%)\n"),
+ "time in %s: %ld.%06ld (%ld%%)\n",
str, total / 1000000, total % 1000000,
all_time == 0 ? 0
: (long) (((100.0 * (double) total) / (double) all_time) + .5));
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